Panel-board.



H. F. KRANTZ.

PANEL BOARD. Y APPLIOATIOF IILED NOV. 10, 1911.

Patented Dec. 10, 1912.

3 SHEETS-SHEET 1.

7. ma?. a Harfe@ H. F. KRANTZ.

' PANEL BOARD.

` ArLIpATIoH FILED Nov.1o, 1911.

Patented Dec. 10, 1912.

3 SHEETS-SHEET 2.

` Jari/Vl H. P. KRANTZ.

PANEL BOARD.

APPLIUATION FILED Nov. 1o, 1911.

1,047,086, Patented 11901111912.

3 SHEETS-SHEET 3.

HUBERT r. or Naw roux, N. Y.

PANEL-Bonn.

Appncmn mea November 1o, 1911.

Speciilcation ofi-Letters Patent.

serial No. 659,459. i v

.To all whom 'it may concern Y Be it known that I, HUBERT a citizen of the United States, residing at Brooklyn, in the county of Kings, city'aiid State of New York, have invented certain new and useful Improvements in Panel- Boards, of. which the following is a clear, full, and exact description. I

The object of this invention is to provlde new and improved type of panel board, that type wherey switches are used to control the branch circuits.

A further object of the invention is to manufacture such a board that the switches will contact directly with the bus bars, and with the branch circuit connections.

A still further object is to provide the switches of such type as to prevent the withdrawal of the fuse holders, except when the switches are turned off, and no current is on the branch circuit. i

A still further object of the invention is to provide such panel board with a protective plate to prevent the contact by theoperator with any live current carrying parts.

A still further object of the invention is to provide an improved fuse holder, in which the act of putting the fuses in position will serve to securely contact the same with the branch circuit connections.

In carryin out my invention, I provide a back plate or the panel board, -which may be housed in an Way convenient and known to the art, and lead from the terminal bus bars, which are secured to the back on different planes, the bus bars being themselves provided preferably with integral project-v ing switch contact arms, the contact arm of one bus bar bein above a contact arm of the other bus bar. dj acent to the bus bars for the different branch circuits are arranged switches with movable switch arms 'adapted to contact with the bus bar contacts, and at the same time with cont-acts in two planes connecting with the branch circuit. These branch circuit contacts preferably lead to terminals for fuses carried by. a fuse block which may be removed only when the switches themselves are in an off position. I further prefer that the fuse holders be provided with recesses, through which a pair of hinged jaws may project, one end of the jaws being widely open and the other end being close together, so that a fuse, when placed within the wide jaws, will bring the le'gs of the other jaws close together, and v F. KRANTZ,

upon placing the fuse holder in position, these close-togetherjaws will act as knife switch contacts to firmly grasp lugs of thel branch circuit connections, at the same time more forcibly holding the fuses in place. I

further maylprovide an inclosed lface plate of insulating material or properly insulated from the `current carrying arts, through which the fuse holders and tlie switches, or the fuse holders or the switches may project, that one handling the circuits may not come into contact with the current carrying parts.

The scope of my invention will be pointed out in the claims.

In the accompanying drawings: Figure 1 is a f ront elevation, with parts broken away, showing my improved panel board. Fig. 2 isa section on line 2 2 Fig. 1. Fig. 3 1s a detail sectional view, the section being taken so as to expose the clips of my fuse holder. Fig. 4 is a side elevation, partly in section, of the fuse holder, the section being taken on line 4 4, Fig. 3. Fig, 5 is a sectional plan on line 55, Fig. 3. Fig. 6 is a side elevation of my improved switch with part broken away. Fig. 7` is a side view of my improved Afuse holder clamp. Fig. 8 is a section on line 8- -8 Fig. 7 Fig. 9 is a perspective view of the two detail branch circuit contacts for the switch. Fig. lO is a face View of a protected type of panel board of the same species as Fig. 1. Fig. 11 is a section on line 10-10 Fig. 10.

As shown in the drawings, the' back plate 1 of suitable insulating material has mounted upon it an inverted T shaped insulating `rail 2, which provides a surface a short distance above the back plate, on which are mounted the plus and minus bus bars 3 and Patented Dec. 1o, 1912.

4. On the top of the rail the neutral bus if bar 5 is secured. The neutral bus bar I prefer to have of a flat sheet of conducting material, preferably copper, having at equally distant points along both its edges projecting contact lugs 6. The plus and minus busvba-rshave similar projecting coniminediatelyabove the other, that isa neutral above a plus or minus lug) I secure to thev board a pair of contact branch circuit connections 7a and 8, as shown in perspective Fig-9. These branch circuit conncctions are secured to the back plates in pairs, and are provided with upstanding lugs 9 for connection with fuse holder to be hercioo 'tact lugs 7. Immediately opposite each pair o f contact lugs (and they are mounted oneV inafter described. They are provided with upstanding members, which are turned over so that 'adjacent members will project toward each other, and their n out-turned switch lugs 10 come in line one under lthe other, and on a level with the switch contact lugs 6A and 7 of the bus bars. Immediately between the contact lugs I mount a rotatable switchshown in detail in Fig. 6. `The, switch consists of the post 11 and insulating sleeve 12, the operatinghandle 13 and the protectingr plate`14, the switch blades 15 and 16 of a simple rotary construction s o that upon turning the switch in one position the blades will contact with the four abutments 6, '2'A and 10-10 to make contact between the bus bars, and the branch circuits, but when turned in the opposite direction the circuit will be brken at four points. I prefer that the insulating plate 14 be provided so that the operator cannot readily come in contact with current carrying parts, and I prefer that it have a slab side las at 17, so that when in the position of the second from the top switch on the right hand'side of Fig. 1, the fuse holder 18 can be withdrawn, but when in the position where current is `flowing the protecting plate 14 will overlap thefuse holder and prevent its Withdrawal as is obviously a very great protection.

As shown in Figs. 10 and 11, I have shown a board practically the same construction as Figs. 1 and 2, but I have displaced the switch with the protecting disk' this application is possessed of safe features of novelty. The branch circuit connections 21 and 22 are provided with lugs similar to lugs 9 of Fig. 9,and each fuse holder is provided withV four clamping jaws, each one adapted to clamp one of the lugs and make good Contact therewith, the fuse holder carrying cartridge fuses extending from lug 9 to lug 22, and from lug 9 to lug 21 in the j body of the fuse block. The fuse block is provided with an operating handle 19. The clamping jaws consist of two members 23 and 24 hinged together at 25, and provided with two depending lugs 26 and 27, and semi-circular jaws 28 and 29, the lugs adapted to grasp the parts 9 and the jaws adapted ,to encircle each a little more than half of the cartridge fuse 30. The jaws pass through apertures 21 in the. fuse block 18, and when in the block, and the block is removed from the board the cartridges may be placed in the cradle formed by the two jaws, which will open to receive them, but upon placing the fuse in a position with the construction may be varied from those ,y shown, and yetthe essence of the invention be retained; some parts might be employed without others, and new features thereof might be combined with elements old in the art in diverse ways, although the herein described type is regarded as embodying substantial improvements over such modifications.

As Amany changes could be made in the above construction, and many apparently widely different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above described or shown in the accompanyingdrawings 'shall be interpreted in an illustrative and not in a limiting sense. v It is furthermore desired to be understood that the language used in the following claims is intended to cover all the generic and specific features of the invention herein described, and all statements of the scope of the invention which'as la matterv of language might be said to fall therebetween.

I claim as my invention:

1. The herein described panel board, consisting of a back plate, branch circuit connections, bus bars, the bus bars arranged in different planes parallel with the back plate, switches and contacting blades therefor between the bus bars and branch circuit connections, the switches having their contacting blades in different planes,'so arranged and located'that the blades will make contacteach with a different bus bar.

2. The herein described panel board consisting of a back plate, a plurality of bus planes above the back plate, a switch having .two switch plates adapted to contact with said contact surfaces and branch circuit contacts for'` the switch. A

3. The herein described panel board consisting of a back plate, a plurality of bus bars having contact surfaces in at least two planes above the backV plate, a switch-having two switch plates adapted to contact with said contact surfaces and branch circuit contracts for the switch, said branch circuit contacts also being in two planes.

4. The herein described panel board consisting of a back jplate, bus bars having two contact surfaces for each branch circuit, two contact surfaces for the branch circuit connections, a switch having two switch arms, at least one pair of said contact surfaces having one of its members in a different plane from the other.

5. The herein described panel board con- November, in the year one thousand nine sistng of the bafk plat; bus lbars arl'raxged hundred and-eleven. v y in at least two anes a ove t e bac p ate, a switch havngptwo switch blades adapted HUBERT F' KRANTZ' 5 to contact directly with said bus bars and Witnesses:

branch circuit contacts for the switch.l FRED. FRANCIS WEISS, Signed at New York city, this 8th day of lF. WARREN WRIGHT. 

